Capital Gains — The Dollar Dictionary

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Investment

Capital Gains

The profit made when you sell an asset — a stock, property, or cryptocurrency — for more than you paid for it.

Capital gains are one of the most tax-efficient forms of income because you choose when to realize them — unlike salary, which is taxed as it arrives. By holding an appreciating asset and not selling, you defer the tax indefinitely. This is one of Warren Buffett's core strategies: let compounding do its work while deferring the tax bill for decades.

Not all capital gains are equal. Unrealized gains exist on paper — your investment is worth more, but you haven't sold. Realized gains occur when you actually sell, triggering a taxable event. Strategic investors are careful about when they sell, often timing sales to minimize their tax liability.

It's the profit from flipping a vintage pair of sneakers. You buy Jordan 1s for £150 at retail, they blow up in popularity, you sell them for £400 on GOAT — that £250 difference is your capital gain. The stock market works identically, just with company shares instead of sneakers, and (usually) less hype.

Real world: If you'd bought £1,000 of Amazon stock in 2010 at roughly £10 per share and held it until 2021 when it hit £3,000 per share, you'd have turned that investment into £300,000. That £299,000 gain is a capital gain — and yes, you'd owe tax on it. The tax rate depends on how long you held the asset: short-term gains (under a year) are taxed as ordinary income; long-term gains get a lower preferential rate.

💡 Capital gains are the reward for patience — the longer you hold a quality asset, the more the gain (and the tax efficiency) compounds.

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